Hone wheel



NO V. 26, 1929. F J JOHNSON 1,737,245

HONEI WHEEL Filed April 1926 2 Sheets-Sheet 1 INVENTOR.

A TTORNEYS Nov. 26, 1929. J, 5, JOHNSON 1,737,245

HONE WHEEL Filed April 5, 1926 2 Sheets-Sheet 2 I INVENTOR.

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. ATTORNEYS Patented .llov. 2%, 1925-? his.

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JOHN S. JQHNSON, OFMILW'AUKEE, WISCONSIN HONE WHEEL Application filed April 5, 1926. Serial No. 99,841.

This invention relates to improvements in hone wheels, particularly adapted for use in the polishing of marble blocks and the like.

Heretofore in hone wheels it has been nec 5 essary to secure the abrasive blocks to the wheel plate by means of heated shellac or other adhesive material. The objection to this form of connection will be readily appreciated as considerable time is required to prepare the shellac, apply it, and then allow it to set. 7

it is the primary object of the present invention to provide a hone wheel in which the above objection is overcome by mechanically clamping the abrasive block or blocks to the wheel plate.

A further object of the invention is to provide a hone wheel in which the abrasive block may be very quickly attached to or detached from the wheel plate, and when attached it is positively and securely held in position.

A further object of the invention is to provide a hone wheel for clampingly receiving an tegra-l abrasive block, or a plurality of small or sectional abrasive blocks.

A further object of the invention is to provide a hone wheel which is of very sim le construction, is strong and durable, is eflicient in operation, and is well ada ated for the purposes described.

With the above and other objects in View the invention consists of the improved hone wheel and its parts and combinations as set forth in the claim, and all equivalents there- In the accompanying drawing in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is a plan view of the improved hone wheel, part being; broken away to show details of construction; I

Fig. 2 is a side view thereof, part being broken away and shown'in section;

Fig. 3 is a detail view of one of the locking lugs employed;

Fig. 4 is a fragmentary plan View of. a slightly modified form of hone wheel and embodying the invention; I V Fig. 5 is asectional view thereof taken on line 55 of Fig. 4: and

hub portion 10 to receive a shaft.

with internally threaded bores 12. The top portion of each rib, adjacent the plate portion, is provided with a rectangular recess 13 and the plate portion, above each of such recesses, contains T-shaped slots 1e.

An abrasive block 15, formed of any suitable abrasive material or composition, and shaped preferably as shown in Fig. 1, is adapted for removable mount-in on the plate portion of the hone wheel. Said block is a circular integral block having a plurality of sections defined by grooves or depressions 16, and the inner periphery f the block abuts against an annular rib or'shoulder 17 proj ecting from the face of the plate portion adjacent the central bore.

Locking lugs 18, shaped as shown in Fig. 3 are provided for clamping the abrasive block to the plate portion. Said lugs are formed with rectangular shank portions'19 and head portions 20 at right angles to the shanks, and the heads, below the shanks are counter-sunk and formed with bolt openings 21. As shown V clearl in Fi 2 a lockin lu has its shank b "a t portion inserted into each of the rectangular openings '13and the upper portions of the heads engage the outer surface of the'abrasive block to hold it firmly and removably in position. The locking lugs are clamped into adjustable position by means of bolts 22 which extend through the bolt openings 21 in' the heads and into the threaded bores 12.

Thus it will be seen that the improved hone wheel provides means for quickly and positively attaching an abrasive block to the wheel and when the same becomes worn it may be quickly removed and replaced. Should any of the block sectionssplit from the main block while in use said split portions will be held in; position because of engagements with the lugs ad the shoulder 17.

' The slots 14 allow dust and grindings to be brushed free of the openings 13.

A slightly modified form of the invention is illustrated in Figs. 4, 5, and 6 wherein the wheel plate 9 is adapted to receive a plurality of angularly shaped abrasive blocks 15 forming the abrasive surface instead of a large integral block. For this purpose the upper surface of the plate portion is formed with a plurality of spaced, singularly shapef lugs 23 between which the blocks 15 are clamped by means or" looking lugs 18, shaped as shown in Fig. 6. The lugs 18 are heldwithin slots 13 in the wheel by means of bolts 22.

From the foregoing description it will be seen that the improved hone wheel-is of very simple and novel construction, and is well 7 adapted for the purposes set forth.

What I claim as my invention is:

A hone wheel, comprising a wheel member having a body portion formed with a plurality of spaced, radially extending T-shaped,

slot-ted recesses, said wheel mem'beralso having a plate portion, an abrasive member mounted on said plate portion, a plurality of T-shaped clamping members having their shank portions extended into said recesses and the head portions engaging the peripheral surface of the abrasive member, and bolts threaded through said clamping mem bers and the wheel body portion to adjus'tably hold the clamping members in clamping position.

In testimony whereof, I affix my signature.

JOHN S. JOHNSON. 

